That is an important question. I wrote in response to this statement:

I remembered that previous conversation linked by scottmsg. Specifically, Bart Sibrel self-identifies as a christian, and uses religious arguments as part of his justification. Perhaps I misunderstood your comment, but I was trying to fill in the gap in knowledge that at least one high profile HB is religious.

The more important question is the one you raise, do his religious beliefs have anything to do with his hoax beliefs?

I don't really know Sibrel's religious beliefs, nor the beliefs of the ICOC. I only looked it up in response to this. From what I gather, there is no overt link between the moon hoax beliefs and the teachings of ICOC (or the Nashville Church). There is no reason to believe from anything so far presented that the ICOC or Nashville Church give a hoot about the moon hoax topic.

If there is a connection, it falls in the realm of mindset. From what I read on the REVEAL website, the ICOC methods are very cultish, and the attitude cultivated in the church is very much one of submission to your superiors in actions and beliefs. They teach a very supremist position that the only "True Christians" and only really saved people are members of the ICOC, those that have been "baptised as a disciple". They exclude not only all other religions, not only all other denominations, but even the other Church of Christ churches on these grounds. They combine this supremist position with a strong urging to proselytize. They are practically demanded to seek out converts. This pairing of ideas seems to me to set one up to have an attitude of superiority in thinking you are the sole holder of the truth, and to stand your ground against all forms of confrontation.

That type of mindset is exactly what Sibrel brings to his moon hoax position. He states he would bet his life that he is correct and the Apollo missions were a hoax, and I believe he is sincere. I think he truly believes that and thus feels justified to go to any lengths whatsoever to bring the story to light - including harassment and abuse of astronauts (who must be in on the hoax). And he must interpret all evidence to support this position, thus he cannot see the film as anything but the astronauts preparing a hoax, not the innocent rehearsing prior to broadcast. He holds his beliefs on emotional grounds and can't be swayed by anything.

Thus the swearing on the Bible being so important to him. If they won't swear on the Bible that they really went, then they must be lying and afraid of God's retribution. Of course if they do swear on the Bible, then they're just evil people who don't care about God, so aren't scared to swear a lie.

To tie this to your ultimate point, is there anything about religious belief in general that makes one suceptible to hoax belief? That's hard to say, because I don't think it is cut and dried.